Stop motion for spinning frames



March 16, 1937. J. F. LEWIS ET AL STOP MOTION FOR SPINNING FRAMES Filed Oct. 4, 1935 2 Sheets-Sheet l JO AND CHMLES W- MOSELEY March 16, 1937. J. F. LEWIS ET AL STOP MOTION FOR SPINNING FRAMES 2 'Sheets-Shet 2 Filed Oct. 4, 1935 JOHN F LEW/5 AND C HnRLss W, Mosaey Wimp Patented Mar. 16, 1937 UNITED STTES ATENT OFFICE STOP MOTION FOR SPINNING FRAME Application October 4, 1935, Serial No. 43,552

10 Claims.

This invention relates to a stop motion for spinning frames and more especially to a stop motion which is operated by the ring rail or traverse motion to stop the same at a point intermeidiate the extremities of the bobbin of yarn. In

spinning machines there will be a waste if the yarn runs over the upper ends of the bobbins which will cause a tangling of the yarn and necessitates the unwinding thereof. Furthermore,

10 it is very desirable that the loose end on the bobbin of yarn be disposed at a point substantially below the tip end of the bobbin in order that the same may be easily engaged by the operators in easily finding the ends, and also whereby the l5'fends will not unwind.

It is, therefore, an object of this invention to provide a stop motion which will not only stop the ring rail after a predetermined amount of yarnrhas been wound onto the bobbin but will 20 also stop the ring rail in such a position that the loose endof the yarn will be disposed intermediate-the two ends of the bobbin and at a substantial distance from the tip end.

It is a further object of the invention to pro- 25 Vide a traverse operated stop motion for spinning'machines and similar fiberpreparation 'ma chinery in which the ring rail will be stopped at a point below the upper end of the yarn on the yarn holder, so that upon the winding of the goyarn to a given height on the holder the traverse can operate and move downwardly substantially below its upper limit of travel before it is stopped, thereby depositing the yarn on the holder so that the end will appear substantially below the upper end of the yarn on the package. Means are provided whereby the point of stoppage of the ring rail can be adjusted to suit particular needs.

Some of the objects of the invention having been stated, other objects will appear as the de- 40 scription proceedswhen taken in connection with the. accompanying drawings, in which:

Figure 1 is a plan view of a portion of a spinning frame with the invention applied thereto;

Figure 2 is a front elevation of Figure 1;

45 Figure 3 is a schematic electrical wiring diagram of the invention as applied to a spinning frame;

Figure .4 is an isometric view of the switch operated bythe ring rail and shown in the lower 50 left-handcorner of Figure 1;

Figure 5 is a sectional view taken along line 5-5 in Figure 1 showing the ring rail shortly before it has reached its uppermost position;

Figure 6 isa cross-sectional view taken along saline 6-..6 iniFigure 4;.

Figure '7 is a sectional detail plan View taken along line 'l'! in Figure 6.

Referring morespecifically to the drawings, the numeral l indicates an end Samson of a spinning frame having a rail II on which are mounted spindles 12 which have mounted thereon bobbins 3 for receiving yarn. These spindles have whorls M which are driven by belt 15, said belt l5 being also mounted around cylinder Hi. This cylinder is driven by pulley H which pulley has a belt [8 mounted thereon. The belt I8 is also mounted upon the pulley IQ of motor 29 which is used for the operation of the spinning frame and is controlled by magnetic switch 2!, master control switch 22 and automatic stop switch 23 which will be presently described. A spinning rail 25 is provided which is gradually moved upwardly and at the same time is reciprocated upwardly and downwardly to give traverse to the yarn. These movements are imparted to shown) on the rings 28 and is thus deposited on the bobbins I3. The parts thus far described are conventional but it is deemed necessary to make this disclosure to more clearly describe the invention.

The current to the motor 20 is supplied through three wires namely, 30, 3! and 32, which are con- 30 nected to one side of triple pole switch 29 normally occupying an open position and comprising blades 33, 34 and 35 respectively. From the other side of these blades, wires 36, 31 and 38 lead to the motor 20. Leading from primary wire 3| is a wire M] which is connected to one side of solenoid M, the other side of said solenoid having a wire 42 connected thereto which leads to terminal 43. Switch 29 has a soft iron portion disposed within solenoid M. Stop switch 44 nor- 4O mally contacts terminals 43 and 45 in normal closed position.

Leading from contact 45 is another wire 46 which is connected to terminal 41 and a starting switch 58 normally bridges the gap between ter- 45 minal ll and terminal 49. This switch is normally in an opened position. From terminal 49 a wire 58 leads back to primary wire 32. In the normal operation of the machine it is seen that when the starting switch $8 is momentarily 50 pressed down, that the current will flow through the wire Ml, solenoid 4!, wire 42, stop switch 44, starting switch 43 and wire 50 to cause the solenoid ll to be energized, which, in turn, will close the switches 33, 34 and 35 to supply current to motor 26. This action will also close the auxiliary switch or contact 52 which will allow the current at this time to flow from wire 32 through wire 53, switch 52 and through wire 54. The other end of wire 54 is connected to terminal 55 and this terminal is normally contacted at all times by one side of a switch 56. The other side of switch 56 contacts terminal 51 from which wire 58 leads, said wire 53 being connected to wire 46. After the button 48 has been closed to cause the current to flow from wire 3| through wire 46, solenoid 4|, wire 42, switch 44, wire 46, switch '48 and wire 56, the switches 33, 34 and 35 and 52 are closed. Once the switch 52 is closed the magnet or solenoid 4! is energized from the wire 32 through another circuit, since the button 48 only remains closed as long as pressure is applied thereto. The switch 52 being closed, the current flows from wire 32, through wire 53, switch 52, wire 54, switch 55, wire 58, switch 44, wire 42, solenoid 4|, wire 45 and back to the primary wire 3|. Leading from wire 54 is a parallel circuit comprising a wire 65 which leads to terminal 6|. This terminal is adapted to be contacted at times by one side of the switch 56, said switch 56 being adapted to also contact terminal 62. Terminal 62 has one end of wire 63 connected thereto and the other end of said wire being connected to wire 58.

The switch 56 and its associated parts are designated collectively by reference character 23 and called the automatic stop switch which is mounted in casing 65 which casing is secured to end frame or Samson ll! of the spinning frame. Casing 65 is located approximately at the uppermost point of travel of the spinning rail 25. Pivotally secured as at 66 is an arm 61, said arm 61 having a slot 58 in the free end thereof in which is pivoted as at 69 a lever 10.

Secured to the top of member 61, as at H, is leaf spring i2 which normally contacts one end of lever 15. Also secured as at 13, is another leaf spring 14 which has the free end thereof normally contacting the upper side of leaf spring 12. This spring 14 has a slot 15 therein which would enable one to adjust the location of the free end of spring 74 on top of spring 12 to vary the amount of spring pressure applied on one end of lever Hi, to vary its resistance to movement by member 18.

The right-hand end of lever 16 as shown in Figure 5, has a pointed end 11, the lower side of which is adapted to be contacted by the upper beveled end of member 18 when the ring rail 25 moves upwardly. Figure 5 shows the member 18 contacting the lower side of pointed end 11 just prior to the time when the ring rail 25 reaches its extreme uppermost position. When it moves to its uppermost position suflicient yarn has been wound on the bobbin and the beveled end of member 18 will pass above the pointed end 11 of lever T6 and end H will fall to horizontal position thereby placing the upper surface of pointed end of Ti a substantial distance beneath the lower surface of member 18 and when the ring rail moves downwardly again in its reciprocatory movement, the member 18 will engage pointed end Ti and move the lever and cause the arm 61 to be rotated in a clockwise manner about pivot point 66 to operate switch 56. This member 18 is adjustably secured in the upper end of bolt i9 by any suitable means such as set screw 80. The bolt '59 is secured in the end of the ring rail 25 and is made adjustable therein by means of nuts 82 and 83 threadably mounted on said semi- 5 bolt and being disposed on opposite sides of the ring rail.

After the ring rail 25 has travelled upwardly far enough to cause the end of member 18 to clear the pointed end 11 the ring rail on its downward movement, and after depressing the free end of arm 6'1, will cause the parts to assume the dotted line position as shown in Figure 2, at which time the lever 61 will have been moved downwardly.

It will be noted by referring to Figures 5 and 6 that a stud 85 is threadably secured in the lower side of lever 6'! which is adapted to contact button 86 which is composed of any suitable insulating material. This button has a restricted portion around which a spring 81 is mounted and the lower end of this spring is held in position by the lower end of bore 88 in bracket 89.

The extreme lower end of button 86 has another restricted portion around which a coil spring 90 is mounted. The lower end of this spring is adapted to contact the switch or contact member 56 to normally push it downwardly against the If, for any reason, the momentum of the machine should not carry member 16 downwardly past the end 11 of member 10 and the switch 56 should stop at a point intermediate the upper terminals 55, 51 and the lower terminals 6| and 62, it would only be necessary to manually press down upon the lever 61 to cause the contact 56 to move down into contact with the terminals BI and 62, and at the same time, close starting switch 48, which switch is operated by the shipper rod to give a momentary contact. When this is done the current will be allowed to flow to the motor and the ring rail will be set into operation. Then the pressure on arm 61 will be released and the machine will stop. Thereafter, the shipper rod will be returned manually to normal position and the machine will operate in a manner as has previously been described. i

completed, that the member 18 will pass by the I end of end 11 and this will fall downwardly and as the ring rail travels downwardly in its downward reciprocation it will engage the upper surface of pointed end 11 and depress the arm 6! to open the circuit to stop the machine. The

amount the ring rail travels downwardly in this.

last reciprocation can be further adjusted by the resistance offered by the springs 14 and 12 because they are adjustable as to tension by means of spring 14 having the slot 15 therein so that its position can be adjusted and its effective length and strength be regulated to offer the proper resistance to the downward movement of the ring rail to thus time the operation of the stopping of the machine.

By stopping the placing of the yarn on the bobbin at the point shown, it is evident that this gives results not heretofore obtained in that the endof the yarn occurs a substantial distance from the upper end of the yarn on the bobbin. This is made possible by the toggle joint arrangement. Furthermore, the double contact switch and the push button arrangement whereby the arm 61 can be depressed manually to close the circuit, enablesthe machine to be started in case the momentum of the machine does not pull member 18 past end 1! of dog 10.

In the drawings and specification there has been set forth a preferred embodiment of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only, and not for purposes of limitation, the scope of the invention being set forth in the appended claims.

We claim:

1. In a spinning frame having a vertically reciproeable ring rail and motor driven spindles for receiving bobbins, an electric circuit including said motor, a normally closed switch in said circuit, a member adjustably mounted on the ring rail for engaging and opening said switch while the ring rail is moving downwardly.

2. In a spinning frame having motor driven spindles and a vertically movable and vertically reciproeable ring rail, a switch box mounted on the machine in cooperative relation to thering rail, a normally closed switch in said switch box, resilient means normally holding the switch in closed position, a pivoted lever for opening said switch, a member mounted on the ring rail for engaging but not moving the lever as the ring rail moves upwardly but being adapted to engage and open the switch as the ring rail moves downwardly in its reciprocatory movement.

3. In a spinning frame having motor driven spindles, and a vertically movable and vertically reciproeable ring rail, a switch box mounted on the machine in cooperative relation to the ring rail, a normally closed switch in said switch box, resilient means normally holding the switch in closed position, a pivoted lever for opening said switch, a member mounted on the ring rail for engaging but not moving the lever as the ring rail moves upwardly but being adapted to engage and open the switch as the ring rail moves downwardly in its reciprocatory movement, and manual means for closing the switch after it has been opened by travel of the ring rail' should the momentum of the machine not move the engaging means on the ring rail past the pivoted lever.

4. In a stop motion for spinning machines having motor driven spindles and a vertically movable ring rail and an electric circuit including said motor, a normally closed switch in said circuit, means on the ring rail for opening said switch while the ring rail is moving downwardly, and manual means for closing said switch to start the machine should the means on the ring rail hold the switch in open position.

5. In a spinning frame having a vertically movable and vertically reciproeable ring rail and also having motor driven spindles for receiving bobbins mounted in cooperative relation to the ring rail, an electric circuit for said motor, a normally closed switch in said circuit mounted in cooperative relation to the ring rail, means on the ring rail for opening said switch when the ring rail has reached its topmost point and has traveled a predetermined amount in its downward reciprocatory movement, and manual means for closing said switch to start the machine should the means on the ring rail hold the switch in open position.

V 6. In a spinning frame having a vertically reciproeable ring railand motor driven spindles for'receiving bobbins, an electric circuit includ-' ing said motor, a normally closed switch in said circuit, a member adjustably mounted on the ring rail for engaging and opening said switch while the ring rail. is moving downwardly, and manual means for closing said switch to start the machine should the means on the ring rail hold the switch in open position.

7. In a spinning machine having motor driven spindles and also having a vertically reciproeable and vertically movable ring rail, an electric circuit including said motor, a switch in said circuit, means for holding said switch normally in closed position, means for opening said switch comprising an arm pivotally supported at one end and having an intermediate portion in engagement with the switch, a dog pivotally mounted in the free end of said arm and whose outer end is free for upward movement, means restraining the outer free end of said dog against downward movement, means mounted on the ring rail adapted to engage and pass by the free end of the dog on its upward movement and being adapted to engage and move the dog and arm downwardly on the downward movement of the ring rail to open said switch.

8. In a spinning machine having motor driven spindles and also having a vertically reciproeable and vertically movable ring rail, an electric circuit including said motor, a switch in said circuit, means for holding said switch normally in closed position, means for opening said switch comprising an arm pivotally supported at one end and having an intermediate portion in engagement with the switch, a dog pivotally mounted in the free end of said arm and whose outer end is free for upward movement, means restraining the outer free end of said dog against downward movement, means mounted on the ring rail adapted to engage and pass by the free end of the dog on its upward movement and being adapted to engage and move the dog and. arm downwardly on the downward movement of the ring rail to open said switch, a parallel normally open circuit in said first circuit and having a pair of contacts in the path of said switch so that manual pressure can be applied to said arm to move the switch farther to close said parallel circuit.

9. In a spinning frame having motor driven spindles and a vertically movable and vertically reciproeable ring rail, an electric circuit including said motor, a magnetic switch in said circuit, a control circuit for said magnetic switch and including a solenoid connected to said magnet switch to move the same toclosed position, a control switch in said control circuit, means normally holding said control switch in closed position, means on the ring rail for opening said control switch while the ring rail is moving downwardly in its reciprocatory movement, and a second control circuit normally open and having a manually operable switch for closing the same to close said magnetic switch to energize the first control circuit.

10. In a spinning frame having motor driven spindles and a vertically movable and vertically reciproeable ring rail, an electric circuit including said motor, a magnetic switch in said circuit, a. normally open circuit having manually operable means for closing the same to close the magnet switch, a control circuit for holding said magnetic switch in closed position, a control switch. in said control circuit, means normally holding said control switch in closed position, means on the ring rail for opening said control switch while the ring rail is moving downwardly in its reciprocatory movement, a second control circuit having a pair of contacts in alinement with the control switch whereby manual move- 

